Challenge 1 / 1

Check out the following class:

class Animal
{
    private $name;
    private $species;

    public function getSummary()
    {
        return "The animal's name is " . $this->name . " and its species is " . $this->species . ".";
    }
}

To guarantee that both $name and $species are always set (so that getSummary() doesn't return a nonsensical string), where could we enforce this requirement? Choose the best option:

class Animal
{
    // ...

    public function __construct($name, $species)
    {
        $this->name = $name;
        $this->species = $species;
    }

    // ...
}

public function getSummary()
{
    if (isset($this->name) && isset($this->species)) {
        return $this->name . " is a type of " . $this->species . ".";
    }

    return "Invalid animal data.";
}

class Animal
{
    // ...

    public function __construct()
    {
        $this->name = 'Default name';
        $this->species = 'Default species';
    }
    // ... 
}

public function getName()
{
    if (isset($this->name)){
        return $this->name;
    }

    return "Invalid animal name.";
}

And the same for getSpecies(). Then call these from getSummary().

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